<!DOCTYPE html>
<link rel='stylesheet' href='./style.css'>
<script src='./script.js' type='text/javascript'></script>
<script>
  fetch('./404');
</script>
<style>
body {
  height: 100px;
  margin: 8px;
  border: 0;
  background-color: #555;

}
div {
  line-height: 18px;
}
</style>
<div>Hi, I'm frame</div>
